Sunday, August 15, 2010

Wind Energy

Suitable areas for large wind power stations are, however, scarce – therefore great hopes are being placed in wind power plants at sea. Worldwide, some offshore wind parks have now been set up, for example in Denmark, Sweden, the Netherlands, Germany and England. The fact that the energy yield at sea is around 50 percent higher is due, amongst other factors, to the fact that water surfaces offer almost no friction to the wind. From a technical point of view, however, the offshore plants are considerably more costly than wind power stations on land because they have to brave high waves, storms and ice. This makes them around 60 percent more expensive than comparable onshore wind parks. In addition, the offshore power stations produce low frequency sounds which could drive away birds, fish and marine mammals.

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